When Dean save a pagan god (by accident) he gets an unexpected reward. The deity thinks Dean prizes virility and so gives him a knot.

Dean just doesn’t find out until the next time he’s buried balls deep in Cas (while they;re playing with a little bondage, Cas tied down with his Grace locked away) and feels something swelling. It’s locked him in there before he can pull out, and trying hurts Cas, tearing him.

Cas manages to get Dean to calm down, and undo the cuffs around his wrists which releases his Grace. This lets him figure out exactly what’s happened. He tells Dean they will need to wait until Dean’s knot goes down so they can uncouple and then they can figure out what to do.

But Cas can’t heal while Dean’s knot is in there so they have to wait. Once it goes down to let Dean pull out, Cas heals himself but Dean feels panicked and guilty.

Bonus for them finding out the knot can’t be removed, but leaning to work around it (and once Dean gets used to it, he and Cas figure out how to use it to improve their sexual pleasure).

Bartholomew "Hollow" Hainsley has presented as an Omega at the relatively late age of twenty-three, leading his brother, the Earl of Westbrooke, to start looking to marry him off. Painfully shy and set in his ways, Hollow wants nothing more than to stay at Westbrooke forever but as he certainly knows, the bulk of the soirees in London are about to begin and there is nothing he can say that will make his brother change his mind about finding him a proper suitor. With at least one marriage proposal under his belt, he can't believe how unlucky he could possibly be to have drawn the gaze of the most formidable Alpha he's ever seen in his life, the rakishly handsome and devilishly mannered Duke of Asterly.

Omegas are very promiscuous, and in fact are encouraged to be this way as society wants all of them to have at least a few litters because Beta and Alpha females have very low fertility rates. It is expected of all Alphas to try and breed any unmated in heat omega they come across. This means though that normally Omegas aren't virgins past their first heat and it is a point for Alphas to boast about, how many Virgin omegas they have popped the cherry off. Teacher Castiel is very good at detecting Omegas, like Dean, who have just went into heat and shuffling them off to the school mating room to be the first to pop his knot in them. Of course afterwards he is very generous and invites the other alphas to join him.

Anything based loosely on INXS' alternative, 'rare' Melting in the Sun music video (https://www.youtube.com/watch?v=Q7H3uktAlIo) with Dean being stalked on the train and through the city streets by another male character or OC. If it ends the same way (death), or if Dean is threatened and groped, etc. before being let go is up to the author. Super excited to see what someone might come up with. Thanks :)

Tagger note: fill is to a prompt in the underage post, however, all characters are of the age of consent (18+)

Omega John becomes obsessed with getting knocked up by his Alpha teenage son. Either Sam or Dean (or both) aren’t complaining one bit. Maybe they have no clue what they’re getting into, but it feels so good to have Omega pussy wrapped around their knots. John has been celibate since Mary, so his pussy is tight, almost like a virgin’s.

Solas was trained in the art of magic by a spirit of wisdom that was commonly referred to as Harel due to it's nature of speaking in double meaning to test and put boundaries on the wisdom it shared. It's got a difficult time with Solas because he, too, tends to speak in double meanings and omitted truths.

The spirit takes the form of a wolf for convenience sake (to indicate it's the one that's been interacted with).

I want that spirit to corrupt and take pride in cracking Solas under his own game, as well as for it to take Pride (Solas), physically and in terms of Anders/Justice style posession.

++ for size kink and knotting
+ for minor cum inflation
+++ for Solas taking it as a badge of pride

Keith is well aware of this fact, but bent over the pilot console with Shiro crushing him against the warm metal and fucking him from behind in devastating thrusts that threaten to break Keith apart at the seams, he thinks he never quite grasped the full meaning of it before Shiro.

Keith can't seem to focus on anything but Shiro. Kolivan notices and sends Keith to his mother for the Galra Sex Talk. But before they can get very far, Voltron is needed.

Back from the fight and unable to resist, Keith makes his move on a willing Shiro. It's instincts over common sense and education as they spend the night together and discover just what it means when Keith goes into rut.

(This fic has ABO dynamics though they aren't spoken about in those terms and are not gone into in depth since Keith skipped out of his Galra sex talk with Krolia.)

Alpha!Steve goes to a gentleman's club where Omegas volunteer to be put on display in gloryholes, ass first, to have some anonymous fun. He can't resist one of the amazing asses on display when he sees it and after Steve gets him all worked up, he asks to take Omega!Tony upstairs to a bedroom for the grand finale.

Fenris was willing to risk his very life to remain free. Finding himself safe in a bed after a vicious fight with his former master was unexpected. Finding out that he was Omega was life altering. Discovering he was Matched with a mage? A cruel twist of fate...or the key to him discovering how to be free.

John Winchester is a hunter who is avenging his wife's murder. John dragged his omega son with him while hunting. Now that Sam is an adult John relies on Sam to keep the hotel tidy, meals, and research.

John normally works alone, however he runs into Dean Campbell another hunter working the same case, John's forced to work with the cocky alpha.

Alpha Dean takes one look at Sam and he wants to fuck him. Dean is a love 'em and leave 'em kinda alpha.

When John walks in on Dean seducing his omega son, he has no problem putting the shot gun to Dean and forcing a mating while he watches. As far as John is concern Dean's not ruining his son and walking away.